Compatibilized blends of polyamide‐6 and polyethylene

Padwa, Allen R.

doi:10.1002/pen.760322208

Cited by 72 publications

(57 citation statements)

References 13 publications

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“…Therefore, the route comprising the Stobbe condensation was abandoned, and an alternative route toward (di)methyl-substituted hept-4Ј-yl succinic anhydrides was employed. In this route, ethyl cyanoacetate was condensed with 3-methylbutanal to ethyl 2-cyano-5-methyl-hex-2-enoate (11). In this cyano acrylate, the double bond was conjugated with both an ester and a cyano group, making it prone to copper (I) iodide-assisted conjugate addition of Grignard reagents.…”

Section: Models For Epm-g-mamentioning

confidence: 99%

Model compounds and13C NMR increments for the characterization of maleic anhydride-grafted polyolefins

Heinen

Erkens

Duin

et al. 1999

J. Polym. Sci. A Polym. Chem.

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Section: Models For Epm-g-mamentioning

confidence: 99%

Model compounds and13C NMR increments for the characterization of maleic anhydride-grafted polyolefins

Heinen

Erkens

Duin

et al. 1999

J. Polym. Sci. A Polym. Chem.

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“…This finding is not fully understood and shows that the logarithmic law of additivity (often applied to estimate the MFI of polymer blends by summing the viscosities of individual components, taking into account their concentrations) 18 appears inapplicable to the blends under consideration. It is because, in the one-stage procedure of grafting and neutralization used in our work, MFI values are lower for LDPE-g-IA Ϫ M ϩ than those for LDPE-g-IA (Table I).…”

Section: Resultsmentioning

confidence: 85%

Structure and properties of polyamide 6 blends with low‐density polyethylene grafted by itaconic acid and with neutralized carboxyl groups

Песецкий

Krivoguz

Jurkowski

2004

J of Applied Polymer Sci

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A comparative study of the structure and properties of two-phase blends of polyamide 6 (PA6) and low-density polyethylene (LDPE) modified in the course of reactive extrusion, by grafting of itaconic acid (IA) without neutralization of carboxyl groups (LDPE-g-IA) and with neutralized carboxyl groups (LDPE-g-IA Ϫ M ϩ ) was carried out. It was shown that 30 wt % of LDPE-g-IA Ϫ M ϩ introduced to PA6 resulted in blends of higher Charpy impact strength compared with that of PA6/LDPE-g-IA blends. The maximum increase was achieved when Mg(OH) 2 was used as a neutralizing agent. The blend morphology has a twophase structure with blurred interphases because of increased adhesion between the phases. The neutralization of carboxyl groups in grafted IA did not lead to two-phase morphology of blends, which had a negative influence on the mechanical properties. It is believed that the differences in the impact strength were caused by the influence of the added neutralizing agents on the structure of interphases, which depends on both the interfaces adhesion and structural effects resulting from the nucleating behavior of the neutralizing agent.

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“…Figure 4 ignations, see Table I. WAXS patterns for the blends: (a) sample A; (b) sample F. For sample des-Why does the zone drawing and zone annealing contribute much more to the improvement of the mechanical properties than do cold drawing and isothermal annealing? The major factor contributing to better mechanical properties in the case of ZD-ZA is the more homogeneous structure.…”

Section: (4 (B)mentioning

confidence: 99%

Structures and mechanical properties of zone-drawn-zone-annealed blends of cocrystallizing poly(butylene terephthalate) and a poly(ether ester)

Apostolov¹,

Fakirov²,

Kloczkowski³

et al. 1996

J. Appl. Polym. Sci.

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SYNOPSISPoly(buty1ene terephthalate) (PBT) and a poly(ether ester) (PEE) based on PBT and poly(ethy1ene glycol) were melt-blended and extruded as films with quenching. They were then zone-drawn (ZD) and zone-annealed (ZA) at various stresses (between 10 and 50 MPa) at temperatures of 160 and 190°C. The goal was to improve their mechanical properties relative to those of the same blend, but cold-drawn (A = 5) and isothermally annealed with fixed ends at the same temperatures for 6 h. All samples were characterized by DSC, WAXS, SAXS, and static mechanical property measurements. In contrast to the isothermally annealed samples, the zone-drawn and zone-annealed ones exhibit one population of crystallites arising from the homo-PBT, as demonstrated by the DSC and SAXS measurements. In addition, however, the WAXS photographic patterns indicate that zone annealing a t 190OC results in isotropization of crystallites originating from the PEE, resulting in the formation of a microfibrillar-reinforced composite. It is assumed that some of the isotropic crystallization occurs on preexisting homo-PBT crystallites, i.e., a partial cocrystallization occurs, improving the adhesion between the components of the blend. The structural features created in the zone-drawn-zone-annealed materials result in higher values of the Young's modulus and tensile strength in comparison to the materials receiving the simple isothermal treatment (1,200 vs. 480 MPa and 213 vs. 113 MPa, respectively

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Compatibilized blends of polyamide‐6 and polyethylene

Cited by 72 publications

References 13 publications

Model compounds and13C NMR increments for the characterization of maleic anhydride-grafted polyolefins

Model compounds and13C NMR increments for the characterization of maleic anhydride-grafted polyolefins

Structure and properties of polyamide 6 blends with low‐density polyethylene grafted by itaconic acid and with neutralized carboxyl groups

Structures and mechanical properties of zone-drawn-zone-annealed blends of cocrystallizing poly(butylene terephthalate) and a poly(ether ester)

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